124798734721 has 4 divisors (see below), whose sum is σ = 131367089200. Its totient is φ = 118230380244.

The previous prime is 124798734719. The next prime is 124798734733. The reversal of 124798734721 is 127437897421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124798734721 - 2¹ = 124798734719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124798734521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3284177211 + ... + 3284177248.

It is an arithmetic number, because the mean of its divisors is an integer number (32841772300).

Almost surely, 2^124798734721 is an apocalyptic number.

It is an amenable number.

124798734721 is a deficient number, since it is larger than the sum of its proper divisors (6568354479).

124798734721 is an equidigital number, since it uses as much as digits as its factorization.

124798734721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568354478.

The product of its digits is 4741632, while the sum is 55.

The spelling of 124798734721 in words is "one hundred twenty-four billion, seven hundred ninety-eight million, seven hundred thirty-four thousand, seven hundred twenty-one".